Asana Mamoru (護 あさな, Mamoru Asana; born May 4, 1990, in Tokyo, Japan) is a Japanese actress and gravure idol who is represented by the talent agency, FMG. Her old stage name was Mana Kono (河野 麻奈, Kōno Mana).

Mamoru is known for portraying Shiraki Meiko in the Prison School live action TV drama, and portraying Unohana Retsu and Tier Harribel in Bleach's Rock Musical stage play.